John k



J, K. SAX.

GAR WHEEL.

(N0 Mod Patented Nov. 1,1881.

UNITED STATES PATENT OFFICE.

JOHN K. SAX, OF HIGH BRIDGE, NEW JERSEY.

CAR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 249,102, dated November1, 1881.

Application filed June 27, 1881. (N0 model.)

To all whom it may concern Be it known that I, JOHN K. SAX, of HighBridge, Hunterdon county, New Jersey, have invented certain Improvementsin the Mannfacture of Oar-Wheels, of which the following is thespecification.

The objects of my invention are to make a car-wheel in which apreviously-formed rim, tire, or re-enforce of suitable metal shall befirmly united to a cast-metal body, and to effeet the union of the twoin an economical manner. These objects I attain by constructing thewheel as hereinafter describethantl shown in the accompanying drawings.

In the drawings, Figure 1 is a section of a spoke-wheel, showing myinvention Fig. 2, a section of the rim,full size.

The cast-metal body A of the wheel may be of any of the usualforms,having spokes, web, or plates, as may be desired.

The tire, tread, or rim B, which may either be cast to full size andshape of steel or other metal or hammered or rolled, if preferred, isformed with two side flanges or lips, c 0, projecting from its innersurface, the inner sides of the flanges being parallel or flaringoutward, as shown in Fig. 1, or inward, as in dotted lines, Fig. 2, soas to form a dovetailed annular recessto receive the periphery of thebody.

In the manufacture of the wheel I first make the tire or rim and thenprepare the mold in which to castthe body of the wheel, said mold ormatrix being provided within its outer circumference with an annularspace to receive the tire, which is then sufficiently heated, and isimmediately placed within the mold in the space intended for itsreception. The mold is then closed and the molten metal poured into itto form the body of the wheel. By this operation the highly-heatedmolten metal is cast against and comes in direct contact with the innersurface of the highly-heated pre\iouslyformed rim, causing an intimatewelding, fusing to, and union of the rim and the body of the wheel atthe respective surfaces in contact.

As in the above process of manufacture the entire wheel is highlyheated, (sufficiently to fuse the body of the wheel to the tire,) all,parts of the wheel cool together, preventing any local chilling of themetal and the creation of tension at any part-from unequal contraction.

The wheels produced are of a superior quality, not only from theeffective union of the tire and the cast-iron body, but also from theposition of the flanges c, afl'ording a wide hearing at each side,resisting any thrust tending to laterally displace the rim, andimparting greaterstrength to the periphery of the castmetal portion ofthe Wheel.

This construction admits of the tire being more closely worn down thanin wheels of ordinary forms, thus effecting a greater saving in theamount of steel or other metal required to secure a given amount ofservice on the rail.

I claim- 1. Acar-wheel consisting of a flanged rim having a recess atthe inner side and a metal body fused or welded to the said rim,substantially as set forth.

2. The combination, in a wheel, of the hammered or rolled metal rimhaving inward projecting side flanges and acast-metal body fused to saidrim, as specified.

In testimony whereofI have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN K. SAX.

Witnesses:

J. T. DORLAND, W. W. DORLAND.

